Enthalpy is a measure of energy. Entropy is direction. When energy decreases, entropy increases. According to Brian Greene (The Fabric of the Cosmos), the entropy of the universe has been increasing since the "Big Bang."
I do not have any quick answers but entopy is the degradation of the quality of energy. If you have an engine that burns fuel, e.g. automobile, energy is being degraded and there is no return to that energy level for the closed system. Ever since the universal "bang" and ever since you were born...